HP Surestore Disk Array 12h - And FC60 Service Manual page 249

Troubleshooting Controller Enclosure Midplane Problems
Table 33
Troubleshooting Controller Enclosure Midplane Problems
Symptom
Power LEDs (front and
power supply FRUs)
are ON but all other
Power LEDs are off
Software errors occur
when attempting to
access controller or
disks
Possible Cause
A Other FRUs are missing
or not installed correctly.
B Defective DC power
harness or power
interface board.
C Failed controller
enclosure midplane.
A Software function or
configuration problems
Procedure
– Check all FRUs in the controller
enclosure and make sure they are
installed securely. If this does not fix the
problem, go to cause B.
– Replace the DC power harnesses and
the power supply assembly. If this does
not fix the problem, go to cause C.
– Replace the controller enclosure
midplane.
– Check the appropriate software and
documentation to make sure the system
is set up correctly or that the proper
command was executed.
Controller Enclosure Troubleshooting
249